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What is glycolysis when oxygen is available?
Glycolysis, in the presence of oxygen, is the first stage of cellular respiration where glucose is broken down into pyruvate. This process occurs in the cytoplasm of the cell and produces a small amount of ATP and NADH. The pyruvate then enters the citric acid cycle to further extract energy from it.
What happens after glycolysis if oxygen is available?
If oxygen is available, the pyruvate produced during glycolysis enters the mitochondria and undergoes aerobic respiration. In the presence of oxygen, pyruvate is converted to acetyl CoA, which enters the citric acid cycle to generate more ATP through oxidative phosphorylation. This process enables the efficient extraction of energy from glucose molecules.
What is released when pyruvate is broken down?
When pyruvate is broken down in the presence of oxygen, it is converted into acetyl-CoA, releasing carbon dioxide and forming NADH molecules in a process called pyruvate oxidation. This acetyl-CoA then enters the citric acid cycle to generate more NADH, FADH2, and ATP.
What happen to pyruvate when absent of oxygen?
In the absence of oxygen, pyruvate is converted into lactate through a process called fermentation. This allows for the regeneration of NAD+ so that glycolysis can continue to produce ATP in the absence of oxygen.
How does oxygen enters to our body?
Oxygen enters our body through the process of respiration. When we inhale, air containing oxygen enters our lungs. The oxygen then diffuses from the air sacs in the lungs into the bloodstream, where it is carried by red blood cells to tissues throughout the body.
What is glycolysis when oxygen is available?
Glycolysis, in the presence of oxygen, is the first stage of cellular respiration where glucose is broken down into pyruvate. This process occurs in the cytoplasm of the cell and produces a small amount of ATP and NADH. The pyruvate then enters the citric acid cycle to further extract energy from it.
What happens after glycolysis if oxygen is available?
If oxygen is available, the pyruvate produced during glycolysis enters the mitochondria and undergoes aerobic respiration. In the presence of oxygen, pyruvate is converted to acetyl CoA, which enters the citric acid cycle to generate more ATP through oxidative phosphorylation. This process enables the efficient extraction of energy from glucose molecules.
When oxygen is present what porduct enters the second stage of cellular respiration?
When oxygen is present, pyruvate molecules produced in glycolysis enter the second stage of cellular respiration, which is the citric acid cycle (Krebs cycle). In this cycle, pyruvate is converted to acetyl CoA, which then enters the citric acid cycle to generate ATP through a series of redox reactions.
What molecule enters glycolysis?
Glucose is the molecule that enters glycolysis to be broken down into pyruvate.
What factore determine which pathway a cell might follow after glycolosis?
If enough oxygen is available, the product of glycolysis, pyruvate, will be further broken down to CO2 and water. This requires oxygen and occurs partly in the mitochondrion. If not enough oxygen is available, the pyruvate will be converted to lactic acid, which causes muscular pain. This pathway also produces less energy for the cell.
What materials enter glycolisis?
Glucose enters into it.Then converted into pyruvate.
What is the molecule that enters glycolisis?
Glucose is the raw material. It is converted into pyruvate.
What is the substance that enters the Krebs cycle from glycolysis?
In Glycolysis, the final compound formed is Pyruvate. Now, pyruvate has to be transformed to Acetyl-CoA by the substitution of the carboxylic group with a Coenzyme A by pyruvate dehydrogenase. In real terms, Acetyl-CoA is the molecule that "switch on" the Krebs cycle.
What is released when pyruvate is broken down?
When pyruvate is broken down in the presence of oxygen, it is converted into acetyl-CoA, releasing carbon dioxide and forming NADH molecules in a process called pyruvate oxidation. This acetyl-CoA then enters the citric acid cycle to generate more NADH, FADH2, and ATP.
Glycolysis produces pyruvate. The fate of this pyruvate depends mainly on the availability of which of the following?
Molecular oxygen
What is pyruvate converted into when oxygen is not present?
lactate
Why pyruvate is converted to lactate when oxygen is not available?
This reaction generates NAD+ from NADH. You need NAD+ for glycolysis, so this conversion (pyruvate to lactate) regenerates one of the reactants needed for glycolysis to continue. You're usually taught that NADH is a source of energy, so getting rid of it when you are energy starved seems counterintuitive. However, when no oxygen is available, you can't use NADH as a source of energy because the electron transport chain is out of commission without oxygen.
